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Finding the Fourth Proportional to 223.19, 334.50 and 209.35

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Solution

The fourth proportional to 223.19, 334.50 and 209.35 is: 313.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.19 : 334.50 = 209.35 : x
  2. Step 2: Convert to fraction form
    223.19/334.50 = 209.35/x
  3. Step 3: Cross multiply
    223.19x = 334.50 × 209.35
  4. Step 4: Simplify right side
    223.19x = 70,024.86
  5. Step 5: Solve for x
    x = 70,024.86/223.19
  6. Step 6: Final answer
    x = 313.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.